Portion of an audio mixer



FIG. 1 is a perspective view of a portion of an audio mixer showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a perspective view of a second embodiment of a portion of an audio mixer, showing a left-hand version;

FIG. 8 is a top plan view thereof;

FIG. 9 is a front elevational view thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a rear elevational view thereof; and,

FIG. 12 is a side elevational view thereof.

The heavy broken lines at the left side edge of Embodiment 1 and at the right side edge of Embodiment 2 represent the bounds of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design. 

The ornamental design for a portion of an audio mixer, as shown and described. 